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imx: add imx8m support

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Add imx8m support:
 - add a cortexa53 subtarget to imx
 - move ARCH and KERNELNAME to subtargets
 - account for kernel modules that are not used for cortexa53

No device-specific targets or firmware images are created yet but all
imx8m* dtbs will be built.

enabling CONFIG_TARGET_ROOTFS_INITRAMFS results in
openwrt-imx-cortexa53-imx8m-initramfs-kernel.bin which has been
successfully booted on an imx8mm-evk using the following:

u-boot=> tftpboot $fdt_addr_r image-imx8mm-evk.dtb && \
tftpboot $kernel_addr_r openwrt-imx-cortexa53-imx8m-initramfs-kernel.bin && \
booti $kernel_addr_r - $fdt_addr_r

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
This commit is contained in:
Tim Harvey
2024-01-08 14:04:15 -08:00
committed by Robert Marko
parent 8db83d4cc0
commit ae8bf1a26e
8 changed files with 200 additions and 9 deletions
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4
package/kernel/linux/modules/video.mk
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@@ -448,7 +448,7 @@ $(eval $(call KernelPackage,drm-imx-hdmi))
define KernelPackage/drm-imx-ldb
SUBMENU:=$(VIDEO_MENU)
TITLE:=Freescale i.MX LVDS DRM support
DEPENDS:=+kmod-backlight kmod-drm-imx
DEPENDS:=@(TARGET_imx&&!TARGET_imx_cortexa53) +kmod-backlight kmod-drm-imx
KCONFIG:=CONFIG_DRM_IMX_LDB \
CONFIG_DRM_PANEL_SIMPLE \
CONFIG_DRM_PANEL=y \
@@ -1182,7 +1182,7 @@ $(eval $(call KernelPackage,video-dma))
define KernelPackage/video-coda
TITLE:=i.MX VPU support
DEPENDS:=@(TARGET_imx&&!TARGET_imx_cortexa7) +kmod-video-mem2mem +kmod-video-dma
DEPENDS:=@(TARGET_imx&&TARGET_imx_cortexa9) +kmod-video-mem2mem +kmod-video-dma
KCONFIG:= \
CONFIG_VIDEO_CODA \
CONFIG_VIDEO_IMX_VDOA